Doppler,

Doppler echocardiography - use of Doppler ultrasonography techniques to augment two-dimensional echocardiography by allowing velocities to be registered within the echocardiographic image. Synonym(s): duplex echocardiography

Doppler effect - a change in frequency is observed when the sound and observer are in relative motion away from or toward each other. Synonym(s): Doppler phenomenon; Doppler principle

In present study, we also evaluated CFR, the magnitude of the increase in blood flow at maximal coronary vasodilation, by using transthoracic Doppler echocardiography as a reliable and reproducible way to assess CFR (30) and found that there is a coronary microvascular endothelial dysfunction in MetS patients.

The mean (SD) plasma concentration of N-terminal proBNP was 59 (51) pmol/L in the group of patients with normal SFN and DFN by Doppler echocardiography and without certain disorders, abnormalities, or drug treatment (n = 39).

2] Doppler echocardiography constitutes the first step of the workup and allows the diagnosis of cardiac tumor The next step should be contrast-enhanced computed tomographic scanning or magnetic resonance imaging.

Mitral inflow was obtained by pulsed-wave Doppler echocardiography with the sample volume between mitral leaflet tips during diastole, and mitral annulus velocities were obtained from the septal and lateral annulus by tissue Doppler imaging.

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